*{
    margin: 0;
    padding: 0;
    list-style: none;
}
a{
    text-decoration: none;
}
nav{
    width: 100%;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px;
    box-sizing: border-box;
    position: sticky;
    left: 0;
    top: 0;
    z-index: 999;
    background-color: #fff;
}
nav img{
    width: 40px;
    height: 40px;
}
nav div:nth-child(2){
    font-size: 18px;
}
.menu{
    width: 100%;
    height: 300px;
    background-color: #e3e4e5;
    position: fixed;
    left: 0;
    top: 52px;
    display: none;
}
.menu.show{
    display: block;
}
.icon-liebiao2{
    font-size: 22px;
    font-weight: bold;
    color: #55a532;
}